Miles Fidelman:
> Wietse Venema wrote:
> > Recipient verification does not expand a local alias (imagine what
> > would have to be done to verify with addresses in .forward files,
> > or in a mail distribution list).
> >
> >
> Maybe I'm dense, but what would be the problem with verifying addresses
> in .forward files?
Basically, the problem is the same as with other mechanisms,
namely that the expansion may produce multiple results.
Address verification would be a lot more complicated if it
had do deal with forks and recursion.
> For list managers, it's a different story - the list manager needs NDNs
> in order to identify and remove bad addresses.
Not all local aliases do or must replace the envelope sender.
Wietse
